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UBUNTU-CVE-2020-10766

MEDIUM5.5

A logic bug flaw was found in Linux kernel before 5.8-rc1 in the implementation of SSBD. A bug in the logic handling allows an attacker with a local account to disable SSBD protection during a context

Published Jun 10, 2020

Modified 6 months ago

Fix available

Details

A logic bug flaw was found in Linux kernel before 5.8-rc1 in the implementation of SSBD. A bug in the logic handling allows an attacker with a local account to disable SSBD protection during a context switch when additional speculative execution mitigations are in place. This issue was introduced when the per task/process conditional STIPB switching was added on top of the existing SSBD switching. The highest threat from this vulnerability is to confidentiality.

Affected Packages

Ubuntu:14.04:LTSlinux

Fixed in:

3.11.0-12.19

Ubuntu:18.04:LTSlinux

Affected versions:

4.13.0-16.194.13.0-17.204.13.0-25.294.13.0-32.354.15.0-10.114.15.0-101.1024.15.0-106.1074.15.0-108.1094.15.0-109.1104.15.0-111.112+44 more

Fixed in:

4.15.0-115.116

Ubuntu:25.04linux

Fixed in:

6.11.0-8.8

Ubuntu:20.04:LTSlinux

Affected versions:

5.3.0-18.195.3.0-24.265.4.0-18.225.4.0-21.255.4.0-24.285.4.0-25.295.4.0-26.305.4.0-28.325.4.0-29.335.4.0-31.35+6 more

Fixed in:

5.4.0-45.49

Ubuntu:24.04:LTSlinux

Fixed in:

6.5.0-9.9

Ubuntu:22.04:LTSlinux

Fixed in:

5.13.0-19.19

Ubuntu:16.04:LTSlinux

Affected versions:

4.2.0-16.194.2.0-17.214.2.0-19.234.3.0-1.104.3.0-2.114.3.0-5.164.3.0-6.174.3.0-7.184.4.0-10.254.4.0-101.124+102 more

Fixed in:

4.4.0-186.216

Ubuntu:25.04linux-aws

Fixed in:

6.11.0-1004.4

Ubuntu:16.04:LTSlinux-aws

Affected versions:

4.4.0-1001.104.4.0-1003.124.4.0-1004.134.4.0-1007.164.4.0-1009.184.4.0-1011.204.4.0-1012.214.4.0-1013.224.4.0-1016.254.4.0-1017.26+60 more

Fixed in:

4.4.0-1111.123

Ubuntu:22.04:LTSlinux-aws

Fixed in:

5.13.0-1005.6

Ubuntu:Pro:14.04:LTSlinux-aws

Affected versions:

4.4.0-1002.24.4.0-1003.34.4.0-1005.54.4.0-1006.64.4.0-1009.94.4.0-1010.104.4.0-1011.114.4.0-1012.124.4.0-1014.144.4.0-1016.16+33 more

Fixed in:

4.4.0-1075.79

Ubuntu:24.04:LTSlinux-aws

Fixed in:

6.5.0-1008.8

Ubuntu:18.04:LTSlinux-aws

Affected versions:

4.15.0-1001.14.15.0-1003.34.15.0-1005.54.15.0-1006.64.15.0-1007.74.15.0-1009.94.15.0-1010.104.15.0-1011.114.15.0-1016.164.15.0-1017.17+37 more

Fixed in:

4.15.0-1080.84

Ubuntu:20.04:LTSlinux-aws

Affected versions:

5.3.0-1003.35.3.0-1008.95.3.0-1009.105.3.0-1010.115.4.0-1005.55.4.0-1007.75.4.0-1008.85.4.0-1009.95.4.0-1011.115.4.0-1015.15+4 more

Fixed in:

5.4.0-1022.22

Ubuntu:14.04:LTSlinux-aws

Fixed in:

4.4.0-1002.2

Ubuntu:Pro:18.04:LTSlinux-aws-5.0

Affected versions:

5.0.0-1021.24~18.04.15.0.0-1022.25~18.04.15.0.0-1023.26~18.04.15.0.0-1024.27~18.04.15.0.0-1025.285.0.0-1027.30

Ubuntu:20.04:LTSlinux-aws-5.15

Affected versions:

5.15.0-1014.18~20.04.1

Fixed in:

5.15.0-1015.19~20.04.1

Ubuntu:18.04:LTSlinux-aws-5.3

Affected versions:

5.3.0-1016.17~18.04.15.3.0-1017.18~18.04.15.3.0-1019.21~18.04.15.3.0-1023.25~18.04.15.3.0-1028.30~18.04.15.3.0-1030.32~18.04.1

Fixed in:

5.3.0-1032.34~18.04.2

Ubuntu:18.04:LTSlinux-aws-5.4

Affected versions:

5.4.0-1018.18~18.04.15.4.0-1020.20~18.04.2

Fixed in:

5.4.0-1022.22~18.04.1

Ubuntu:22.04:LTSlinux-aws-6.8

Fixed in:

6.8.0-1009.9~22.04.2

Ubuntu:FIPS-updates:18.04:LTSlinux-aws-fips

Affected versions:

4.15.0-2000.44.15.0-2018.184.15.0-2021.214.15.0-2022.224.15.0-2024.24

Ubuntu:FIPS-updates:20.04:LTSlinux-aws-fips

Affected versions:

5.4.0-1021.21+fips2

Ubuntu:FIPS-updates:22.04:LTSlinux-aws-fips

Affected versions:

5.15.0-1051.56+fips1

Ubuntu:Pro:FIPS:18.04:LTSlinux-aws-fips

Affected versions:

4.15.0-2000.4

Ubuntu:Pro:FIPS-updates:18.04:LTSlinux-aws-fips

Affected versions:

4.15.0-2000.44.15.0-2018.184.15.0-2021.214.15.0-2022.224.15.0-2024.24

Fixed in:

4.15.0-2025.25

Ubuntu:FIPS-preview:22.04:LTSlinux-aws-fips

Affected versions:

5.15.0-1042.47+fips1

Ubuntu:Pro:FIPS-updates:20.04:LTSlinux-aws-fips

Affected versions:

5.4.0-1021.21+fips2

Fixed in:

5.4.0-1069.73+fips2

Ubuntu:FIPS:18.04:LTSlinux-aws-fips

Affected versions:

4.15.0-2000.4

Ubuntu:Pro:FIPS:20.04:LTSlinux-aws-fips

Affected versions:

5.4.0-1021.21+fips2

Ubuntu:Pro:FIPS-updates:22.04:LTSlinux-aws-fips

Affected versions:

5.15.0-1051.56+fips1

Fixed in:

5.15.0-1052.57+fips1

Ubuntu:FIPS:20.04:LTSlinux-aws-fips

Affected versions:

5.4.0-1021.21+fips2

Ubuntu:Pro:FIPS-preview:22.04:LTSlinux-aws-fips

Affected versions:

5.15.0-1042.47+fips1

Fixed in:

5.15.0-1051.56+fips1

Ubuntu:16.04:LTSlinux-aws-hwe

Affected versions:

4.15.0-1030.31~16.04.14.15.0-1031.33~16.04.14.15.0-1032.34~16.04.14.15.0-1033.35~16.04.14.15.0-1035.37~16.04.14.15.0-1036.38~16.04.14.15.0-1039.41~16.04.14.15.0-1040.42~16.04.14.15.0-1041.43~16.04.14.15.0-1043.45~16.04.1+19 more

Fixed in:

4.15.0-1080.84~16.04.1

Ubuntu:16.04:LTSlinux-azure

Affected versions:

4.11.0-1009.94.11.0-1011.114.11.0-1013.134.11.0-1014.144.11.0-1015.154.11.0-1016.164.13.0-1005.74.13.0-1006.84.13.0-1007.94.13.0-1009.12+50 more

Fixed in:

4.15.0-1093.103~16.04.1

Ubuntu:25.04linux-azure

Fixed in:

6.11.0-1004.4

Ubuntu:22.04:LTSlinux-azure

Fixed in:

5.13.0-1006.7

Ubuntu:Pro:14.04:LTSlinux-azure

Affected versions:

4.15.0-1023.24~14.04.14.15.0-1030.31~14.04.14.15.0-1031.32~14.04.14.15.0-1032.33~14.04.24.15.0-1035.36~14.04.24.15.0-1036.38~14.04.24.15.0-1037.39~14.04.24.15.0-1039.41~14.04.24.15.0-1040.44~14.04.14.15.0-1041.45~14.04.1+18 more

Fixed in:

4.15.0-1093.103~14.04.1

Ubuntu:20.04:LTSlinux-azure

Affected versions:

5.3.0-1003.35.3.0-1008.95.3.0-1009.105.4.0-1006.65.4.0-1008.85.4.0-1009.95.4.0-1010.105.4.0-1012.125.4.0-1016.165.4.0-1019.19+2 more

Fixed in:

5.4.0-1023.23

Ubuntu:Pro:18.04:LTSlinux-azure

Affected versions:

4.15.0-1002.24.15.0-1003.34.15.0-1004.44.15.0-1008.84.15.0-1009.94.15.0-1012.124.15.0-1013.134.15.0-1014.144.15.0-1018.184.15.0-1019.19+34 more

Ubuntu:24.04:LTSlinux-azure

Fixed in:

6.5.0-1007.7

Ubuntu:18.04:LTSlinux-azure-4.15

Affected versions:

4.15.0-1082.924.15.0-1083.934.15.0-1089.994.15.0-1091.1014.15.0-1092.102

Fixed in:

4.15.0-1093.103

Ubuntu:20.04:LTSlinux-azure-5.15

Fixed in:

5.15.0-1007.8~20.04.1

Ubuntu:18.04:LTSlinux-azure-5.3

Affected versions:

5.3.0-1007.8~18.04.15.3.0-1008.9~18.04.15.3.0-1009.10~18.04.15.3.0-1010.11~18.04.15.3.0-1012.13~18.04.15.3.0-1013.14~18.04.15.3.0-1016.17~18.04.15.3.0-1018.19~18.04.15.3.0-1019.20~18.04.15.3.0-1020.21~18.04.1+4 more

Fixed in:

5.3.0-1034.35~18.04.1

Ubuntu:18.04:LTSlinux-azure-5.4

Affected versions:

5.4.0-1020.20~18.04.15.4.0-1022.22~18.04.1

Fixed in:

5.4.0-1023.23~18.04.1

Ubuntu:24.04:LTSlinux-azure-6.11

Fixed in:

6.11.0-1008.8~24.04.1

Ubuntu:22.04:LTSlinux-azure-6.8

Fixed in:

6.8.0-1008.8~22.04.1

Ubuntu:Pro:18.04:LTSlinux-azure-edge

Affected versions:

4.18.0-1006.6~18.04.14.18.0-1007.7~18.04.14.18.0-1008.8~18.04.15.0.0-1012.12~18.04.2

Ubuntu:Pro:20.04:LTSlinux-azure-fde

Affected versions:

5.4.0-1063.66+cvm2.25.4.0-1063.66+cvm3.25.4.0-1064.67+cvm1.15.4.0-1065.68+cvm2.15.4.0-1067.70+cvm1.15.4.0-1068.71+cvm1.15.4.0-1069.72+cvm1.15.4.0-1070.73+cvm1.15.4.0-1072.75+cvm1.15.4.0-1073.76+cvm1.1+16 more

Ubuntu:22.04:LTSlinux-azure-fde

Fixed in:

5.15.0-1019.24.1

Ubuntu:20.04:LTSlinux-azure-fde-5.15

Fixed in:

5.15.0-1019.24~20.04.1.1

Ubuntu:Pro:FIPS-updates:20.04:LTSlinux-azure-fips

Affected versions:

5.4.0-1022.22+fips1

Fixed in:

5.4.0-1073.76+fips1

Ubuntu:Pro:FIPS:20.04:LTSlinux-azure-fips

Affected versions:

5.4.0-1022.22+fips1

Ubuntu:Pro:FIPS-updates:18.04:LTSlinux-azure-fips

Affected versions:

4.15.0-1002.24.15.0-2006.7

Fixed in:

4.15.0-2007.8

Ubuntu:Pro:FIPS-preview:22.04:LTSlinux-azure-fips

Fixed in:

5.15.0-1053.61+fips1

Ubuntu:Pro:FIPS-updates:22.04:LTSlinux-azure-fips

Affected versions:

5.15.0-1053.61+fips1

Fixed in:

5.15.0-1058.66+fips1

Ubuntu:Pro:FIPS:18.04:LTSlinux-azure-fips

Affected versions:

4.15.0-1002.2

Ubuntu:24.04:LTSlinux-azure-nvidia

Fixed in:

6.8.0-1013.14

Ubuntu:20.04:LTSlinux-bluefield

Affected versions:

5.4.0-1007.10

Fixed in:

5.4.0-1011.14

Ubuntu:22.04:LTS:for:NVIDIA:BlueFieldlinux-bluefield

Fixed in:

5.15.0-1011.13

Ubuntu:Pro:FIPS-updates:20.04:LTSlinux-fips

Fixed in:

5.4.0-1026.30

Ubuntu:Pro:FIPS-updates:22.04:LTSlinux-fips

Affected versions:

5.15.0-73.80+fips1

Fixed in:

5.15.0-92.102+fips1

Ubuntu:Pro:FIPS:16.04:LTSlinux-fips

Affected versions:

4.4.0-1001.14.4.0-1002.2

Ubuntu:Pro:FIPS-updates:18.04:LTSlinux-fips

Affected versions:

4.15.0-1027.324.15.0-1029.344.15.0-1034.394.15.0-1035.404.15.0-1037.424.15.0-1038.43

Fixed in:

4.15.0-1039.44

Ubuntu:Pro:FIPS:16.04:LTSlinux-fips

Affected versions:

4.4.0-1003.34.4.0-1005.54.4.0-1006.64.4.0-1008.104.4.0-1010.134.4.0-1011.144.4.0-1012.164.4.0-1013.174.4.0-1015.204.4.0-1017.22+15 more

Fixed in:

4.4.0-1043.48

Ubuntu:Pro:FIPS-preview:22.04:LTSlinux-fips

Fixed in:

5.15.0-73.80+fips1

Ubuntu:FIPS:16.04:LTSlinux-fips

Affected versions:

4.4.0-1003.34.4.0-1005.54.4.0-1006.64.4.0-1008.104.4.0-1010.134.4.0-1011.144.4.0-1012.164.4.0-1013.174.4.0-1015.204.4.0-1017.22+15 more

Ubuntu:22.04:LTSlinux-gcp

Fixed in:

5.13.0-1005.6

Ubuntu:25.04linux-gcp

Fixed in:

6.11.0-1003.3

Ubuntu:Pro:18.04:LTSlinux-gcp

Affected versions:

4.15.0-1001.14.15.0-1003.34.15.0-1005.54.15.0-1006.64.15.0-1008.84.15.0-1009.94.15.0-1010.104.15.0-1014.144.15.0-1015.154.15.0-1017.18+28 more

Ubuntu:16.04:LTSlinux-gcp

Affected versions:

4.10.0-1004.44.10.0-1006.64.10.0-1007.74.10.0-1008.84.10.0-1009.94.13.0-1002.54.13.0-1006.94.13.0-1007.104.13.0-1008.114.13.0-1011.15+41 more

Fixed in:

4.15.0-1081.92~16.04.1

Ubuntu:24.04:LTSlinux-gcp

Fixed in:

6.5.0-1007.7

Ubuntu:20.04:LTSlinux-gcp

Affected versions:

5.3.0-1004.45.3.0-1009.105.3.0-1011.125.4.0-1005.55.4.0-1007.75.4.0-1008.85.4.0-1009.95.4.0-1011.115.4.0-1015.155.4.0-1018.18+2 more

Fixed in:

5.4.0-1022.22

Ubuntu:18.04:LTSlinux-gcp-4.15

Affected versions:

4.15.0-1071.814.15.0-1077.874.15.0-1078.884.15.0-1080.90

Fixed in:

4.15.0-1081.92

Ubuntu:20.04:LTSlinux-gcp-5.15

Fixed in:

5.15.0-1006.9~20.04.1

Ubuntu:18.04:LTSlinux-gcp-5.3

Affected versions:

5.3.0-1008.9~18.04.15.3.0-1009.10~18.04.15.3.0-1010.11~18.04.15.3.0-1012.13~18.04.15.3.0-1014.15~18.04.15.3.0-1016.17~18.04.15.3.0-1017.18~18.04.15.3.0-1018.19~18.04.15.3.0-1020.22~18.04.15.3.0-1026.28~18.04.1+2 more

Fixed in:

5.3.0-1032.34~18.04.1

Ubuntu:18.04:LTSlinux-gcp-5.4

Affected versions:

5.4.0-1019.19~18.04.25.4.0-1021.21~18.04.1

Fixed in:

5.4.0-1022.22~18.04.1

Ubuntu:24.04:LTSlinux-gcp-6.11

Fixed in:

6.11.0-1006.6~24.04.2

Ubuntu:22.04:LTSlinux-gcp-6.8

Fixed in:

6.8.0-1010.11~22.04.1

Ubuntu:Pro:18.04:LTSlinux-gcp-edge

Affected versions:

4.18.0-1004.5~18.04.14.18.0-1005.6~18.04.14.18.0-1006.7~18.04.14.18.0-1007.8~18.04.14.18.0-1008.9~18.04.14.18.0-1009.10~18.04.14.18.0-1011.12~18.04.14.18.0-1012.13~18.04.14.18.0-1013.14~18.04.14.18.0-1015.16~18.04.1+2 more

Ubuntu:Pro:FIPS-updates:22.04:LTSlinux-gcp-fips

Fixed in:

5.15.0-1048.56+fips1

Ubuntu:Pro:FIPS-updates:20.04:LTSlinux-gcp-fips

Affected versions:

5.4.0-1021.21+fips1

Fixed in:

5.4.0-1067.71~20.04.1

Ubuntu:Pro:FIPS-updates:18.04:LTSlinux-gcp-fips

Fixed in:

4.15.0-2013.14

Ubuntu:Pro:FIPS:20.04:LTSlinux-gcp-fips

Affected versions:

5.4.0-1021.21+fips1

Ubuntu:Pro:FIPS-preview:22.04:LTSlinux-gcp-fips

Fixed in:

5.15.0-1048.56+fips1

Ubuntu:Pro:FIPS:18.04:LTSlinux-gcp-fips

Affected versions:

4.15.0-1001.1

Ubuntu:24.04:LTSlinux-gke

Fixed in:

6.8.0-1003.5

Ubuntu:22.04:LTSlinux-gke

Fixed in:

5.15.0-1002.2

Ubuntu:Pro:20.04:LTSlinux-gke

Affected versions:

5.4.0-1033.355.4.0-1035.375.4.0-1036.385.4.0-1037.395.4.0-1039.415.4.0-1041.435.4.0-1042.445.4.0-1043.455.4.0-1044.465.4.0-1046.48+41 more

Ubuntu:18.04:LTSlinux-gke-4.15

Affected versions:

4.15.0-1030.324.15.0-1032.344.15.0-1033.354.15.0-1034.364.15.0-1036.384.15.0-1037.394.15.0-1040.424.15.0-1041.434.15.0-1042.444.15.0-1044.46+13 more

Fixed in:

4.15.0-1067.70

Ubuntu:18.04:LTSlinux-gke-5.0

Affected versions:

5.0.0-1011.11~18.04.15.0.0-1013.13~18.04.15.0.0-1015.15~18.04.15.0.0-1017.17~18.04.15.0.0-1020.20~18.04.15.0.0-1022.22~18.04.35.0.0-1023.23~18.04.25.0.0-1025.26~18.04.15.0.0-1026.27~18.04.25.0.0-1027.28~18.04.1+8 more

Fixed in:

5.0.0-1045.46

Ubuntu:18.04:LTSlinux-gke-5.3

Affected versions:

5.3.0-1011.12~18.04.15.3.0-1012.13~18.04.15.3.0-1014.15~18.04.15.3.0-1016.17~18.04.15.3.0-1017.18~18.04.15.3.0-1018.19~18.04.15.3.0-1020.22~18.04.15.3.0-1026.28~18.04.15.3.0-1030.32~18.04.1

Fixed in:

5.3.0-1032.34~18.04.1

Ubuntu:20.04:LTSlinux-gkeop

Fixed in:

5.4.0-1008.9

Ubuntu:24.04:LTSlinux-gkeop

Fixed in:

6.8.0-1001.3

Ubuntu:22.04:LTSlinux-gkeop

Fixed in:

5.15.0-1001.2

Ubuntu:20.04:LTSlinux-gkeop-5.15

Fixed in:

5.15.0-1003.5~20.04.2

Ubuntu:18.04:LTSlinux-hwe

Affected versions:

4.18.0-13.14~18.04.14.18.0-14.15~18.04.14.18.0-15.16~18.04.14.18.0-16.17~18.04.14.18.0-17.18~18.04.14.18.0-18.19~18.04.14.18.0-20.21~18.04.14.18.0-21.22~18.04.14.18.0-22.23~18.04.14.18.0-24.25~18.04.1+21 more

Fixed in:

5.3.0-64.58~18.04.1

Ubuntu:16.04:LTSlinux-hwe

Affected versions:

4.10.0-27.30~16.04.24.10.0-28.32~16.04.24.10.0-30.34~16.04.14.10.0-32.36~16.04.14.10.0-33.37~16.04.14.10.0-35.39~16.04.14.10.0-37.41~16.04.14.10.0-38.42~16.04.14.10.0-40.44~16.04.14.10.0-42.46~16.04.1+63 more

Fixed in:

4.15.0-115.116~16.04.1

Ubuntu:20.04:LTSlinux-hwe-5.15

Fixed in:

5.15.0-33.34~20.04.1

Ubuntu:18.04:LTSlinux-hwe-5.4

Affected versions:

5.4.0-37.41~18.04.15.4.0-39.43~18.04.15.4.0-40.44~18.04.15.4.0-42.46~18.04.1

Fixed in:

5.4.0-45.49~18.04.2

Ubuntu:24.04:LTSlinux-hwe-6.11

Affected versions:

6.11.0-17.17~24.04.2

Fixed in:

6.11.0-19.19~24.04.1

Ubuntu:22.04:LTSlinux-hwe-6.8

Fixed in:

6.8.0-38.38~22.04.1

Ubuntu:Pro:18.04:LTSlinux-hwe-edge

Affected versions:

5.0.0-15.16~18.04.15.0.0-16.17~18.04.15.0.0-17.18~18.04.15.0.0-19.20~18.04.15.0.0-20.21~18.04.15.3.0-19.20~18.04.25.3.0-22.24~18.04.15.3.0-23.25~18.04.15.3.0-23.25~18.04.25.3.0-24.26~18.04.2

Ubuntu:Pro:16.04:LTSlinux-hwe-edge

Affected versions:

4.10.0-14.16~16.04.14.10.0-19.21~16.04.14.10.0-20.22~16.04.14.10.0-21.23~16.04.14.10.0-22.24~16.04.14.10.0-24.28~16.04.14.10.0-26.30~16.04.14.11.0-13.19~16.04.14.11.0-14.20~16.04.14.13.0-16.19~16.04.3+13 more

Ubuntu:22.04:LTSlinux-ibm

Fixed in:

5.15.0-1002.2

Ubuntu:24.04:LTSlinux-ibm

Fixed in:

6.5.0-1009.9

Ubuntu:20.04:LTSlinux-ibm

Affected versions:

5.4.0-1003.4

Fixed in:

5.4.0-1004.5

Ubuntu:20.04:LTSlinux-ibm-5.15

Affected versions:

5.15.0-1033.36~20.04.1

Fixed in:

5.15.0-1034.37~20.04.1

Ubuntu:18.04:LTSlinux-ibm-5.4

Fixed in:

5.4.0-1010.11~18.04.2

Ubuntu:22.04:LTSlinux-ibm-6.8

Fixed in:

6.8.0-1008.8~22.04.1

Ubuntu:Pro:22.04:LTS:Realtime:Kernellinux-intel-iot-realtime

Fixed in:

5.15.0-1021.26

Ubuntu:22.04:LTSlinux-intel-iot-realtime

Affected versions:

5.15.0-1073.75

Ubuntu:22.04:LTS:Realtime:Kernellinux-intel-iot-realtime

Ubuntu:22.04:LTSlinux-intel-iotg

Fixed in:

5.15.0-1004.6

Ubuntu:20.04:LTSlinux-intel-iotg-5.15

Fixed in:

5.15.0-1003.5~20.04.1

Ubuntu:20.04:LTSlinux-iot

Fixed in:

5.4.0-1001.3

Ubuntu:20.04:LTSlinux-kvm

Affected versions:

5.3.0-1003.35.3.0-1008.95.3.0-1009.105.4.0-1004.45.4.0-1006.65.4.0-1007.75.4.0-1008.85.4.0-1009.95.4.0-1011.115.4.0-1015.15+2 more

Fixed in:

5.4.0-1021.21

Ubuntu:18.04:LTSlinux-kvm

Affected versions:

4.15.0-1002.24.15.0-1003.34.15.0-1004.44.15.0-1006.64.15.0-1008.84.15.0-1010.104.15.0-1011.114.15.0-1012.124.15.0-1016.164.15.0-1017.17+34 more

Fixed in:

4.15.0-1072.73

Ubuntu:16.04:LTSlinux-kvm

Affected versions:

4.4.0-1004.94.4.0-1007.124.4.0-1008.134.4.0-1009.144.4.0-1010.154.4.0-1012.174.4.0-1013.184.4.0-1015.204.4.0-1017.224.4.0-1019.24+39 more

Fixed in:

4.4.0-1077.84

Ubuntu:22.04:LTSlinux-kvm

Fixed in:

5.13.0-1004.4

Ubuntu:24.04:LTSlinux-lowlatency

Fixed in:

6.5.0-9.9.1

Ubuntu:22.04:LTSlinux-lowlatency

Fixed in:

5.15.0-22.22

Ubuntu:20.04:LTSlinux-lowlatency-hwe-5.15

Fixed in:

5.15.0-33.34~20.04.1

Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11

Affected versions:

6.11.0-1009.10~24.04.1

Fixed in:

6.11.0-1011.12~24.04.1

Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.8

Fixed in:

6.8.0-38.38.1~22.04.2

Ubuntu:14.04:LTSlinux-lts-xenial

Fixed in:

4.4.0-13.29~14.04.1

Ubuntu:Pro:14.04:LTSlinux-lts-xenial

Affected versions:

4.4.0-101.124~14.04.14.4.0-103.126~14.04.14.4.0-104.127~14.04.14.4.0-108.131~14.04.14.4.0-109.132~14.04.14.4.0-111.134~14.04.14.4.0-112.135~14.04.14.4.0-116.140~14.04.14.4.0-119.143~14.04.14.4.0-121.145~14.04.1+74 more

Fixed in:

4.4.0-186.216~14.04.1

Ubuntu:24.04:LTSlinux-nvidia

Fixed in:

6.8.0-1007.7

Ubuntu:22.04:LTSlinux-nvidia

Fixed in:

5.15.0-1005.5

Ubuntu:22.04:LTSlinux-nvidia-6.5

Fixed in:

6.5.0-1004.4

Ubuntu:22.04:LTSlinux-nvidia-6.8

Fixed in:

6.8.0-1008.8~22.04.1

Ubuntu:24.04:LTSlinux-nvidia-lowlatency

Fixed in:

6.8.0-1009.9.1

Ubuntu:22.04:LTSlinux-nvidia-tegra

Affected versions:

5.15.0-1009.95.15.0-1010.105.15.0-1012.12

Fixed in:

5.15.0-1013.13

Ubuntu:24.04:LTSlinux-nvidia-tegra

Fixed in:

6.8.0-1003.3

Ubuntu:20.04:LTSlinux-nvidia-tegra-5.15

Fixed in:

5.15.0-1009.9~20.04.1

Ubuntu:22.04:LTSlinux-nvidia-tegra-igx

Fixed in:

5.15.0-1001.1

Ubuntu:18.04:LTSlinux-oem

Affected versions:

4.15.0-1002.34.15.0-1004.54.15.0-1006.94.15.0-1008.114.15.0-1009.124.15.0-1012.154.15.0-1013.164.15.0-1015.184.15.0-1017.204.15.0-1018.21+32 more

Fixed in:

4.15.0-1094.104

Ubuntu:20.04:LTSlinux-oem-5.6

Affected versions:

5.6.0-1007.75.6.0-1008.85.6.0-1010.105.6.0-1011.115.6.0-1013.135.6.0-1017.175.6.0-1018.18

Fixed in:

5.6.0-1020.20

Ubuntu:24.04:LTSlinux-oem-6.11

Fixed in:

6.11.0-1007.7

Ubuntu:24.04:LTSlinux-oem-6.14

Affected versions:

6.14.0-1004.4

Fixed in:

6.14.0-1005.5

Ubuntu:24.04:LTSlinux-oem-6.8

Fixed in:

6.8.0-1003.3

Ubuntu:18.04:LTSlinux-oem-osp1

Affected versions:

5.0.0-1010.115.0.0-1012.135.0.0-1015.165.0.0-1018.205.0.0-1020.225.0.0-1022.245.0.0-1024.275.0.0-1025.285.0.0-1027.315.0.0-1028.32+13 more

Fixed in:

5.0.0-1065.70

Ubuntu:24.04:LTSlinux-oracle

Fixed in:

6.5.0-1010.10

Ubuntu:16.04:LTSlinux-oracle

Affected versions:

4.15.0-1007.9~16.04.14.15.0-1008.10~16.04.14.15.0-1009.11~16.04.14.15.0-1010.12~16.04.14.15.0-1011.13~16.04.14.15.0-1013.15~16.04.14.15.0-1014.16~16.04.14.15.0-1015.17~16.04.14.15.0-1017.19~16.04.24.15.0-1018.20~16.04.1+17 more

Fixed in:

4.15.0-1051.55~16.04.1

Ubuntu:18.04:LTSlinux-oracle

Affected versions:

4.15.0-1007.94.15.0-1008.104.15.0-1009.114.15.0-1010.124.15.0-1011.134.15.0-1013.154.15.0-1014.164.15.0-1015.174.15.0-1017.194.15.0-1018.20+18 more

Fixed in:

4.15.0-1051.55

Ubuntu:22.04:LTSlinux-oracle

Fixed in:

5.13.0-1008.10

Ubuntu:20.04:LTSlinux-oracle

Affected versions:

5.3.0-1002.25.3.0-1007.85.3.0-1008.95.4.0-1005.55.4.0-1007.75.4.0-1008.85.4.0-1009.95.4.0-1011.115.4.0-1015.155.4.0-1018.18+2 more

Fixed in:

5.4.0-1022.22

Ubuntu:25.04linux-oracle

Fixed in:

6.11.0-1006.6

Ubuntu:Pro:18.04:LTSlinux-oracle-5.0

Affected versions:

5.0.0-1007.12~18.04.15.0.0-1008.13~18.04.15.0.0-1009.14~18.04.15.0.0-1010.15~18.04.15.0.0-1011.165.0.0-1013.185.0.0-1014.19

Ubuntu:20.04:LTSlinux-oracle-5.15

Fixed in:

5.15.0-1007.9~20.04.1

Ubuntu:18.04:LTSlinux-oracle-5.3

Affected versions:

5.3.0-1011.12~18.04.15.3.0-1013.14~18.04.15.3.0-1014.15~18.04.15.3.0-1016.18~18.04.15.3.0-1018.20~18.04.15.3.0-1024.26~18.04.15.3.0-1027.29~18.04.15.3.0-1028.30~18.04.1

Fixed in:

5.3.0-1030.32~18.04.1

Ubuntu:18.04:LTSlinux-oracle-5.4

Affected versions:

5.4.0-1019.19~18.04.15.4.0-1021.21~18.04.1

Fixed in:

5.4.0-1022.22~18.04.1

Ubuntu:22.04:LTSlinux-oracle-6.8

Fixed in:

6.8.0-1006.6~22.04.3

Ubuntu:22.04:LTSlinux-raspi

Fixed in:

5.13.0-1008.9

Ubuntu:20.04:LTSlinux-raspi

Affected versions:

5.4.0-1007.75.4.0-1008.85.4.0-1011.115.4.0-1012.125.4.0-1013.135.4.0-1015.15

Fixed in:

5.4.0-1016.17

Ubuntu:24.04:LTSlinux-raspi

Fixed in:

6.5.0-1005.7

Ubuntu:25.04linux-raspi

Fixed in:

6.11.0-1004.4

Ubuntu:18.04:LTSlinux-raspi-5.4

Affected versions:

5.4.0-1013.13~18.04.15.4.0-1015.15~18.04.1

Fixed in:

5.4.0-1016.17~18.04.1

Ubuntu:Pro:24.04:LTS:Realtime:Kernellinux-raspi-realtime

Fixed in:

6.7.0-2001.1

Ubuntu:24.04:LTS:Realtime:Kernellinux-raspi-realtime

Ubuntu:24.04:LTSlinux-raspi-realtime

Affected versions:

6.8.0-2019.20

Ubuntu:18.04:LTSlinux-raspi2

Affected versions:

4.13.0-1005.54.13.0-1006.64.13.0-1008.84.15.0-1006.74.15.0-1009.104.15.0-1010.114.15.0-1011.124.15.0-1012.134.15.0-1013.144.15.0-1017.18+37 more

Fixed in:

4.15.0-1068.72

Ubuntu:16.04:LTSlinux-raspi2

Affected versions:

4.2.0-1013.194.2.0-1014.214.3.0-1006.64.4.0-1003.44.4.0-1004.54.4.0-1009.104.4.0-1010.124.4.0-1010.134.4.0-1012.164.4.0-1016.22+73 more

Fixed in:

4.4.0-1136.145

Ubuntu:Pro:20.04:LTSlinux-raspi2

Affected versions:

5.3.0-1007.85.3.0-1014.165.3.0-1015.175.3.0-1017.195.4.0-1004.45.4.0-1006.6

Ubuntu:18.04:LTSlinux-raspi2-5.3

Affected versions:

5.3.0-1017.19~18.04.15.3.0-1018.20~18.04.15.3.0-1019.21~18.04.15.3.0-1021.23~18.04.15.3.0-1022.24~18.04.15.3.0-1023.25~18.04.15.3.0-1026.28~18.04.15.3.0-1027.29~18.04.15.3.0-1028.30~18.04.2

Fixed in:

5.3.0-1030.32~18.04.2

Ubuntu:25.04linux-realtime

Fixed in:

6.11.0-1001.1

Ubuntu:Pro:22.04:LTS:Realtime:Kernellinux-realtime

Fixed in:

5.15.0-1006.6

Ubuntu:22.04:LTSlinux-realtime

Affected versions:

5.15.0-1032.35

Ubuntu:Pro:24.04:LTS:Realtime:Kernellinux-realtime

Fixed in:

6.8.0-1008.19

Ubuntu:24.04:LTSlinux-realtime

Fixed in:

6.8.1-1015.16

Ubuntu:25.04linux-riscv

Fixed in:

6.11.0-8.8.1

Ubuntu:22.04:LTSlinux-riscv

Affected versions:

5.13.0-1004.45.13.0-1006.6+22.04.15.13.0-1007.7+22.04.15.13.0-1010.11+22.04.15.15.0-1004.45.15.0-1005.55.15.0-1006.65.15.0-1007.75.15.0-1008.85.15.0-1011.12+13 more

Ubuntu:24.04:LTSlinux-riscv

Fixed in:

6.5.0-9.9.1

Ubuntu:20.04:LTSlinux-riscv

Affected versions:

5.4.0-24.285.4.0-26.305.4.0-27.315.4.0-28.325.4.0-30.34

Fixed in:

5.4.0-31.35

Ubuntu:20.04:LTSlinux-riscv-5.15

Fixed in:

5.15.0-1015.17~20.04.1

Ubuntu:24.04:LTSlinux-riscv-6.14

Fixed in:

6.14.0-22.22.1~24.04.1

Ubuntu:22.04:LTSlinux-riscv-6.8

Fixed in:

6.8.0-38.38.1~22.04.1

Ubuntu:16.04:LTSlinux-snapdragon

Affected versions:

4.4.0-1012.124.4.0-1013.144.4.0-1013.154.4.0-1015.184.4.0-1019.224.4.0-1020.234.4.0-1022.254.4.0-1024.274.4.0-1026.294.4.0-1030.33+71 more

Fixed in:

4.4.0-1140.148

Ubuntu:18.04:LTSlinux-snapdragon

Affected versions:

4.15.0-1053.574.15.0-1054.584.15.0-1055.594.15.0-1057.624.15.0-1058.644.15.0-1060.664.15.0-1062.694.15.0-1064.714.15.0-1065.724.15.0-1066.73+16 more

Fixed in:

4.15.0-1084.92

Ubuntu:20.04:LTSlinux-xilinx-zynqmp

Fixed in:

5.4.0-1020.24

Ubuntu:22.04:LTSlinux-xilinx-zynqmp

Fixed in:

5.15.0-1022.26

References

REPORThttps://ubuntu.com/security/CVE-2020-10766 ADVISORYhttps://ubuntu.com/security/notices/USN-4427-1 ADVISORYhttps://ubuntu.com/security/notices/USN-4439-1 ADVISORYhttps://ubuntu.com/security/notices/USN-4440-1 ADVISORYhttps://ubuntu.com/security/notices/USN-4483-1 ADVISORYhttps://ubuntu.com/security/notices/USN-4485-1 REPORThttps://www.cve.org/CVERecord?id=CVE-2020-10766 REPORThttps://www.openwall.com/lists/oss-security/2020/06/10/1 REPORThttps://www.theregister.com/2020/06/09/linux_kernel_bugs_spectre

CVSS Analysis

CVSS v3.1

5.5

Exploitability

Attack Vector

LocalAV:L

Attack Complexity

LowAC:L

Privileges Required

LowPR:L

User Interaction

NoneUI:N

Scope

Scope

UnchangedS:U

Impact

Confidentiality

HighC:H

Integrity

NoneI:N

Availability

NoneA:N

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Upstream

Related

USN-4427-1 USN-4439-1 USN-4440-1 USN-4483-1 USN-4485-1

Timeline

PublishedJun 10, 2020

ModifiedJul 15, 2025

UBUNTU-CVE-2020-10766 | Mondoo Vulnerability Intelligence